﻿@{
    Layout = null;
}

<script src="~/Scripts/MGJJS/Market/jQueryRotate.js"></script>
<style>
    .TurnTable {
        position: absolute;
        left: 0;
        top: 0;
        width: 100%;
        height: 100%;
    }

    a:hover {
        color: #c00;
        text-decoration: none;
    }

    .clear {
        clear: both;
    }

    /* 大转盘样式 */
    .banner {
        display: block;
        width: 95%;
        margin-left: auto;
        margin-right: auto;
        margin-bottom: 20px;
    }

        .banner .turnplate {
            display: block;
            width: 100%;
            position: relative;
        }

            .banner .turnplate canvas.item {
                width: 100%;
            }

            .banner .turnplate img.pointer {
                position: absolute;
                width: 31.5%;
                height: 42.5%;
                left: 34.6%;
                top: 23%;
            }
</style>


<div class="TurnTable" style="background:#e62d2d;overflow-x:hidden;">
    <img src="/Content/webImgs/Market/Turntable/2.png" id="sorry-img" style="display:none;" />
    <img src="/Content/webImgs/Market/Turntable/quan.png" id="quan" style="display:none;" />
    <img src="/Content/webImgs/Market/Turntable/红包.png" id="hong" style="display:none;" />
    <img src="/Content/webImgs/Market/Turntable/1.png" id="liu" style="display:none;" />
    <div class="banner">
        <div class="turnplate" style="background-image: url(/Content/webImgs/Market/Turntable/turnplate-bg.png); background-size: 100% 100%;">
            <canvas class="item" id="wheelcanvas" width="422px" height="422px"></canvas>
            <img class="pointer" src="/Content/webImgs/Market/Turntable/turnplate-pointer.png" />
        </div>
    </div>
</div>
<script type="text/javascript">

    //$.ajax({
    //    type: "get",
    //    url: ' /Market/GetAwards',
    //    data: { Aid: localStorage.getItem('Id') },
    //    success: function (data) {
    //        console.log(data);
    //    }
    //});



    var turnplate = {
        restaraunts: [],				//大转盘奖品名称
        colors: [],					//大转盘奖品区块对应背景颜色
        outsideRadius: 192,			//大转盘外圆的半径
        textRadius: 155,				//大转盘奖品位置距离圆心的距离
        insideRadius: 68,			//大转盘内圆的半径
        startAngle: 0,				//开始角度
        bRotate: false				//false:停止;ture:旋转
    };

    $(document).ready(function () {
        //动态添加大转盘的奖品与奖品区域背景颜色
        //	turnplate.restaraunts = ["50M免费流量包", "1000闪币", "谢谢参与", "5闪币", "110M免费流量包", "20M免费流量包", "20闪币 ", "30M免费流量包", "100M免费流量包", "2闪币"];
        //	turnplate.colors = ["#FFF4D6", "#FFFFFF", "#FFF4D6", "#FFFFFF","#FFF4D6", "#FFFFFF", "#FFF4D6", "#FFFFFF","#FFF4D6", "#FFFFFF"];
        turnplate.restaraunts = ["50M免费流量包", "10元红包", "谢谢参与", "150M免费流量包", "100代金券", "谢谢参与"];
        turnplate.colors = ["#FFF4D6", "#FFFFFF", "#FFF4D6", "#FFFFFF", "#FFF4D6", "#FFFFFF"];


        var rotateTimeOut = function () {
            $('#wheelcanvas').rotate({
                angle: 0,
                animateTo: 2160,
                duration: 5000,
                callback: function () {
                    $.L.msgError('网络超时，请检查您的网络设置！');
                }
            });
        };

        //旋转转盘
        // item:奖品位置; txt：提示语;
        var rotateFn = function (item, txt) {
            //转盘总共旋转的角度
            var angles = item * (360 / turnplate.restaraunts.length) - (360 / (turnplate.restaraunts.length * 2));
            if (angles < 270) {
                angles = 270 - angles;
            } else {
                angles = 360 - angles + 270;
            }
            $('#wheelcanvas').stopRotate();
            $('#wheelcanvas').rotate({
                angle: 0,
                animateTo: angles + 1800,
                duration: 7000,
                callback: function () {
                    $.L.msgError(txt);
                    turnplate.bRotate = !turnplate.bRotate;
                }
            });
        };

        $('.pointer').click(function () {
            if (turnplate.bRotate) return;
            turnplate.bRotate = !turnplate.bRotate;
            //获取随机奖品(奖品个数范围内)
            var item = rnd(1, turnplate.restaraunts.length);
            //奖品数量等于10,指针落在对应奖品区域的中心角度[252, 216, 180, 144, 108, 72, 36, 360, 324, 288]
            rotateFn(item, turnplate.restaraunts[item - 1]);
            //console.log(item);
        });
    });

    function rnd(n, m) {
        var random = Math.floor(Math.random() * (m - n + 1) + n);
        return random;

    }


    //页面所有元素加载完毕后执行drawRouletteWheel()方法对转盘进行渲染
 
        drawRouletteWheel();


    function drawRouletteWheel() {
        var canvas = document.getElementById("wheelcanvas");
        if (canvas.getContext) {
            //根据奖品个数计算出一个奖品占的圆周角度
            var arc = Math.PI / (turnplate.restaraunts.length / 2);
            var ctx = canvas.getContext("2d");
            //在给定矩形内清空一个矩形
            ctx.clearRect(0, 0, 422, 422);
            //strokeStyle 属性设置或返回用于笔触的颜色、渐变或模式
            ctx.strokeStyle = "#FFBE04";
            //font 属性设置或返回画布上文本内容的当前字体属性
            ctx.font = '16px Microsoft YaHei';
            for (var i = 0; i < turnplate.restaraunts.length; i++) {
                var angle = turnplate.startAngle + i * arc;
                ctx.fillStyle = turnplate.colors[i];
                ctx.beginPath();
                //arc(x,y,r,起始角,结束角,绘制方向) 方法创建弧/曲线（用于创建圆或部分圆）
                ctx.arc(211, 211, turnplate.outsideRadius, angle, angle + arc, false);
                ctx.arc(211, 211, turnplate.insideRadius, angle + arc, angle, true);
                ctx.stroke();
                ctx.fill();
                //锁画布(为了保存之前的画布状态)
                ctx.save();

                //----绘制奖品开始----
                ctx.fillStyle = "#E5302F";
                var text = turnplate.restaraunts[i];
                var line_height = 17;
                //translate方法重新映射画布上的 (0,0) 位置
                ctx.translate(211 + Math.cos(angle + arc / 2) * turnplate.textRadius, 211 + Math.sin(angle + arc / 2) * turnplate.textRadius);

                //rotate方法旋转当前的绘图
                ctx.rotate(angle + arc / 2 + Math.PI / 2);

                /** 下面代码根据奖品类型、奖品名称长度渲染不同效果，如字体、颜色、图片效果。(具体根据实际情况改变) **/
                if (text.indexOf("M") > 0) {//流量包
                    var texts = text.split("M");//根据M进行切割
                    for (var j = 0; j < texts.length; j++) {
                        ctx.font = j == 0 ? 'bold 20px Microsoft YaHei' : '16px Microsoft YaHei';
                        if (j == 0) {
                            //context.fillText(text,x,y,maxWidth);
                            ctx.fillText(texts[j] + "M", -ctx.measureText(texts[j] + "M").width / 2, j * line_height);
                        } else {
                            ctx.fillText(texts[j], -ctx.measureText(texts[j]).width / 2, j * line_height);
                        }
                    }
                } else if (text.indexOf("M") == -1 && text.length > 6) {//奖品名称长度超过一定范围
                    text = text.substring(0, 6) + "||" + text.substring(6);
                    var texts = text.split("||");
                    for (var j = 0; j < texts.length; j++) {
                        ctx.fillText(texts[j], -ctx.measureText(texts[j]).width / 2, j * line_height);
                    }
                } else {
                    //在画布上绘制填色的文本。文本的默认颜色是黑色
                    //measureText()方法返回包含一个对象，该对象包含以像素计的指定字体宽度
                    ctx.fillText(text, -ctx.measureText(text).width / 2, 0);
                }

                //添加对应图标
                if (text.indexOf("M") > 0) {
                    var img = document.getElementById("liu");
                    img.onload = function () {
                        ctx.drawImage(img, -15, 25);
                    };
                    ctx.drawImage(img, -15, 25);
                } else if (text.indexOf("谢谢参与") >= 0) {
                    var img = document.getElementById("sorry-img");
                    img.onload = function () {
                        ctx.drawImage(img, -15, 10);
                    };
                    ctx.drawImage(img, -15, 10);
                } else if (text.indexOf("金") >= 0) {
                    var img = document.getElementById("quan");
                    img.onload = function () {
                        ctx.drawImage(img, -15, 10);
                    };
                    ctx.drawImage(img, -15, 10);
                } else if (text.indexOf("红") >= 0) {
                    var img = document.getElementById("hong");
                    img.onload = function () {
                        ctx.drawImage(img, -15, 10);
                    };
                    ctx.drawImage(img, -15, 10);
                }

                //把当前画布返回（调整）到上一个save()状态之前
                ctx.restore();
                //----绘制奖品结束----
            }
        }
    }

</script>
